class AppConstants {
  static const String appName = '送货对账';
  
  // 数据库相关
  static const String databaseName = 'delivery_accounting.db';
  static const int databaseVersion = 1;
  
  // 默认间距
  static const double defaultPadding = 16.0;
  static const double defaultMargin = 12.0;
  static const double elementSpacing = 8.0;
}